Successful Sea Trials to CH-53K Helicopter

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The heavy-lift cargo helicopter CH-53K King Stallion completed a two-week period of sea trials in the Atlantic earlier this month. This was the first opportunity to see the aircraft working in a modern naval environment.

This helicopter competes with Boeing’s CH-47 helicopter over the replacement of the Israeli Air Force’s old CH-53 (Yas’ur) helicopters.

Testing took place on the USS Wasp, a landing helicopter dock (LHD) amphibious assault ship operated by the U.S. Navy. 

According to navair.navy.mil, ship compatibility testing includes towing the aircraft around the deck and in the hangar, performing maintenance while aboard the ship, ensuring the aircraft fits in all the locations it needs to around the ship deck and hangar, and evaluating chain/tie-down procedures.

“We were able to assess the K taking off and landing day, night, and with night vision goggles and it performed extremely well,” said Col. Jack Perrin, H-53 helicopters program manager.

According to the CH-53K integrated test team, the sea trials are a series of tests to evaluate the performance of the aircraft at sea. Tests performed during the two weeks included: launch and recovery; rotor start and shutdown; blade fold; and shipboard compatibility testing – all in increasing wind speed and varying wind directions relative to the aircraft.

“The bulk of the testing was in launch and recovery,” said Perrin, “and we nailed it every time, no matter what the wind/sea conditions were. The 53K is now a “feet-wet” warrior from the sea.”

The CH-53K King Stallion continues to execute within the reprogrammed CH-53K timeline, moving toward completion of developmental test, leading to initial operational test and evaluation in 2021 and first fleet deployment in 2023-2024.

Sikorsky CH-53K Program Director, Bill Falk, said that “The CH-53K demonstrated exceptional performance throughout its initial sea trials continuing the team’s progress towards initial operational test and evaluation in 2021 and deployment in 2023-2024.

Executing 364 ship landings and takeoffs from all deck spots, expanding the wind envelope, performing multiple towing and hanger evolutions, and conducting multiple rotor blade spread, fold, engagement and disengagement operations, the CH-53K is right at home aboard a large deck amphibious ship and is one step closer to deployment.

The King Stallion, the only 21st Century fully marinized heavy lift helicopter, excelled in the shipboard environment reinforcing its critical role allowing Marines the operational flexibility to move more material, more rapidly from ship to shore. “